Named in 1894 by Charles Palache for Charles Whitman Cross [September 1, 1854 Southampton near Amherst, Massachusetts - April 20, 1949 Chevy Chase, Maryland]. Cross was a petrologist the the United States geological Survey and was widely regarded as the greatest field petrologist of his generation. He was important in classifying igneous rocks, etc.

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality.
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- This locality has map coordinates listed. - This locality has estimated coordinates.ⓘ - Click for further information on this occurrence.? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant.(TL) - Type Locality for a valid mineral species.(FRL) - First Recorded Locality for everything else (eg varieties).Struck out - Mineral was erroneously reported from this locality.Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.

Draper, G. (1986) Blueschists and associated rocks in eastern Jamaica and their significance for Cretaceous plate-margin development in the northern Caribbean. Geological Society of America Bulletin 97:1, 48-60.

Wise, W.S & Gill, R.H. (1977): Minerals of the Benitoite Gem mine. Mineralogical Record 8, 442-452; William S. Wise (1982) Strontiojoaquinite and bario-orthojoaquinite: two new members of the joaquinite group . American Mineralogist 67:809-81